Steam-turbine for locomotives.



J. B. DUMAS. STEAMA TURBINE .FOB LOCUMOTIVES.

uPLIoATIoN FILED 4111111.11, 1911. l

Patented DSC. 5, 1911.

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STEAM TURBINB FOR LOGOMOTIVES.

APPLICATION FILED APRJI, 1911.

Patented Dec. 5, l1911.

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35 steam pockets 3 and 4a which are arranged JOEL BENJAMAN l'UlVIAS,r 0FCOLEMAN, TEXAS.

STEAM-TURBINE FOR LOCOIVIOTIVES.

Specification of Letters Patent.

Patented Dee. 5, 1911.

Application filed April 11, 1911. Serial No. 620,304.

To all 'whom it may concern:

Be it known that I, JOEL BENJAMAN DUMAS, a citizen of the United States,residing at Coleman, in the county of Coleman and State of Texas, haveinvented new and useful Improvements in Steam-Turbines for Locomotives,of which the following is a specification.

This invention relates to steam turbines for locomotives or similarvehicles, the object of the invention being to provide a compactmechanism having positive geared connections with the driving axles ofthe locomotive eliminating friction between the driving parts to a greatextent, thereby insuring the most veiiicient driving action of the axlesat a minimum expenditure of the elastic fluid to be utilized in runningthe turbine. f

In the drawings, forming ak portion of this specication and in whichlike numerals of reference indicate similar parts in the severalviewsz-Figure 1 is a side elevation of a locomotive constructed inaccordance with the present invention. Fig. 2 is a bottom plan viewthereof. Fig. 3 is a vertical section taken on the line 3 3 of Fig. 1.Fig. 4 is a horizontal section through the turbine casing showing aportion of the turbine wheel in section.

The present invention contemplates the provision of a turbine of thetype shown at A, the said turbine comprising a casing 1 having rotatablymounted therein a wheel 2. The wheel is provided with rows of in directcommunication with the fluid intake pipes 4 and 5 which are connectedwith the main connection 6 from the boiler 7. The pipe 6 is providedwith a suitable well known valve which can be operated to permit thesteam to pass into either one of the pipes 4 or 5.

The wheel 2 of the turbine has secured thereto a driving shaft 11 whichcarries a friction disk 12. This disk contacts with similar disks 13 and14 which are journaled in suitable bearings on the supporting frame ofthe turbine. The driving axle 15 of the locomotive is provided with afriction disk 16 which contacts with the disk 13. The driving axle 17 isprovided with .a friction disk 18 which contacts with the disk 14. Thedisks 13 and 14 may be of any well lmown approved construction which maybe found most desirable for the purpose 1ntended, but as illustrated,each is formed with the beveled surface 19 engaging the disk 12 and thebeveled surface 20 which engages the friction disks on the dr'ving axles15 and 17 respectively.

The pockets 4a of the turbine wheel have their impact surfaces 4extending in a reverse direction from the axis of the wheel to thedirection of the impact surfaces 5 of the pockets 5a, and as shown, theintake pipes 4 and 5 open into the pockets at opposite sides of thevertical axis of the wheel, so that the wheel can be propelled in eitherdirection at the will of the operator.

When the valve 8 in the branch fluid intake pipe 5 is closed and thevalvefin the branch intake pipe 4 open, steam from the boiler will takethe course indicated by the arrows shown in Fig. 4 of the drawings. Thewheel 2 of the turbine will be propelled in the direction of the arrow aand through the described geared connections between the drivingshaft 11of the wheel and the driving shafts 15 and 17 respectively of thelocomotive, the latter will be propelled in a. forward direction. Shouldit be desired to reverse the movement of the locomotive, the valve 8 inthe Huid intake pipe 4 is closed and the valve in the'opposite intakepipe is open, the pressure of the fluid against the wheel 2 acting torevolve the wheel 2 in an opposite direction.

The turbine conventionally shown herein may be of any' well knownconstruction which may be most suited for the purpose, however, I desireto use the one illustrated because when arranged horizontally, as shown,it can be placed or associated in the most compact manner with thedriving gearing described.

The casing 1 is provided with a suitable exhaust 21. The casing 1 ismounted on a support 10 which comprises the members 10a and 1()b thesaid member 10*l being provided with a centrally depending annularportion, and said member 10b being provided with a centrally upwardlyextending annular portion so that when the members are operativelyconnected, both of the said annular portions forming a bearing for thedriving shaft 11 and having the bearing portions l0c which are fitted tothe axles 15 and 17.

While the invention as described is designed particularly for use uponlocomotives, it is obvious that its use is unlimited,

its construction being such that it may be used in connection withvarious forms of steam engines, including those of the stationary type,and boilers, traction engines or other forms of portable engines. It isalso obvious that one or more of such turbines can be used according tothe character of the work to which the apparatus may be put. It may alsobe stated that the turbine can be disposed either horizontally, asshown, or vertically if desired. l

I claim- In a turbine driven locomotive, a horizontally disposed casinglocated between the driving axles of the locomotive, an impact wheelrevolubly mounted within the casing, a fluid conveying pipe, said wheelprovided with a depending driving shaft, and having a plurality ofperipheral pockets, one of the series of pockets having their impactsurfaces extending in an opposite direction from the axis of the wheelfrom the impact surfaces of the pockets of the other series, a supportconnecting the casing with the driving axle, the said support comprisingtwo members, the upper member being provided with a centrally upwardlyextending annular portion, and the lower member being provided with acentrally depending annular portion, both annular portions forming abearing for the driving shaft, the said driving shaft being providedwith geared connections with the driving axles of the locomotive, branchpipes connected with the fluid supply pipe and opening into the casingon the opposite sides of the vertical axis of the wheel for dischargingthe fiuid, into the pockets, and a controlling valve at the point ofconnection of the branch pipes with the said fluid pipe.

In testimony whereof I alix my signature in presence of two witnesses.

JOEL BENJAMAN DUMAS.

Vitnesses:

F. J. WHITE, J. M. PARKER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

